Finding the Third Proportional to 59,059.13 and 90,777.38

Step by Step Solution

1. Step 1: Write the proportion equation
   59,059.13 : 90,777.38 = 90,777.38 : x
2. Step 2: Convert to fraction form
   59,059.13/90,777.38 = 90,777.38/x
3. Step 3: Cross multiply
   59,059.13x = 90,777.38 × 90,777.38
4. Step 4: Simplify right side
   59,059.13x = 8,240,531,811.89
5. Step 5: Solve for x
   x = 8,240,531,811.89/59,059.13
6. Step 6: Final answer
   x = 139,530.20